VOL. XHI.] 



PHILOSOPHICAL TRANSACTIONS. 



689 



TAB. II. 



The above may serve as a specimen of the tables deduced from these very troublesome expe- 

 riments. 



Some Jurther Account of Polypi, in a Letter from his Grace the Duke of Rich- 

 mond, Lennox and Aubigne, F. R. S., to M, Folhes, Esq. Pr. R, S. Dated 

 Utrecht, May 1A, {June A) 1743. N°470, p. 510. 



You will not be sorry to receive some further account of the polypus ; and I 

 must tell you what I have seen in M. Trembley's study at Sorgvliet. He has 

 there 12 large glasses, of about a foot high, each holding from a gallon to 6 

 quarts of water, all well stocked with those insects, to the amount of many 

 hundreds. They are, in general, considerably larger than any I had before 

 seen ; and as I was first with him on a Tuesday, and made him a second visit 

 on the Sunday following, I had the opportunity of seeing the prodigious in- 

 crease they had made in those 5 days. Several single ones that I had left, had 

 in that time put out 5 or 6 young ones each ; and those I had seen him perform 

 operations on, were not only recovered, but had most of them produced young 

 ones also. I saw him split the head of one about 2 o'clock in the afternoon, 

 and at about 7 the same evening, each head ate a small worm. I saw him split 

 another from the head to the tail, and each of those parts also ate part of a 

 worm before night. Another operation I saw liim make, wiiich I had not be- 

 fore heard of, which was that by putting one of the points of a very small pair 

 of sharp scissars into the mouth of a polypus, and forcing it out at the very end 

 of the tail, he then laid it quite open like a pigeon, or a Barbacute pig to be 

 broiled ; yet, in about 5 hours, I saw the same polypus with the parts so re- 

 united again, that I could not perceive any thing had been done to it ; and it 

 then ate a worm larger than itself He then showed me another odd particu- 



